Belfast International Airport (County Antrim) weather

Find a forecast

Forecast days

Tue 15 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 06:58

Sunset: 19:41

Light showers.

M UV

L Pollution

No pollen data.

Tue 15 Sep

Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
Wed 16 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 07:00

Sunset: 19:39

Cloudy changing to light rain by early evening.

M UV

L Pollution

No pollen data.

Wed 16 Sep

Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Thu 17 Sep

Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 07:01

Sunset: 19:36

Light showers changing to sunny intervals by early evening.

M UV

L Pollution

No pollen data.

Thu 17 Sep

Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Fri 18 Sep

Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 07:03

Sunset: 19:34

Cloudy changing to light rain by late morning.

L UV

L Pollution

No pollen data.

Fri 18 Sep

Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
Sat 19 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 13° Celsius;

Sunrise: 07:05

Sunset: 19:31

Sunny intervals changing to partly cloudy by early evening.

M UV

L Pollution

No pollen data.

Sat 19 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius;
Sun 20 Sep

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 07:07

Sunset: 19:29

Cloudy.

M UV

No pollution data.

No pollen data.

Sun 20 Sep

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;
Mon 21 Sep

Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;

Sunrise: 07:09

Sunset: 19:26

Overcast.

M UV

No pollution data.

No pollen data.

Mon 21 Sep

Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius;

Light showers.

Sunrise: 06:58

Sunset: 19:41

M UV

L Pollution

No pollen data.

7 day forecast for Belfast International Airport

Today (15 September 2026)

Time	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	60%	90%	80%	60%	60%
Temperature (°C)	14°	14°	14°	13°	13°
Feels like temperature (°C)	13°	13°	12°	12°	12°
Wind direction and speed (mph)	WNW 10	WNW 9	WNW 9	WNW 9	WNW 9
Wind gust (mph)	20	21	21	20	20
Visibility (description)	VG	G	G	G	G
Humidity	75%	79%	86%	87%	86%
UV	1	-	-	-	-

Wednesday (16 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	80%	70%	50%	40%	50%	40%	30%	30%	20%	20%	<5%	10%	20%	20%	20%	10%	20%	60%	40%	50%	50%	≥95%	90%	80%
Temperature (°C)	13°	13°	13°	13°	12°	12°	13°	12°	12°	13°	14°	14°	15°	15°	15°	15°	15°	15°	15°	14°	13°	13°	13°	13°
Feels like temperature (°C)	11°	11°	11°	11°	11°	11°	11°	11°	11°	11°	12°	12°	13°	13°	13°	13°	13°	13°	12°	12°	11°	11°	11°	11°
Wind direction and speed (mph)	WNW 9	W 10	WNW 10	WNW 9	WNW 9	W 9	W 8	W 8	W 8	W 8	W 8	W 9	W 10	WSW 10	WSW 11	WSW 11	WSW 11	SW 13	SW 13	SW 14	SSW 13	SSW 14	SSW 14	SW 16
Wind gust (mph)	19	20	19	19	19	18	17	17	17	19	19	20	21	22	23	23	23	23	23	25	26	27	28	28
Visibility (description)	G	G	G	G	G	G	VG	G	G	VG	VG	VG	VG	VG	VG	VG	G	VG	VG	G	G	G	M	G
Humidity	87%	89%	87%	87%	87%	87%	87%	87%	87%	86%	84%	77%	74%	72%	69%	71%	69%	68%	74%	75%	81%	84%	91%	92%
UV	-	-	-	-	-	-	-	1	1	1	2	3	3	3	3	2	1	1	1	1	-	-	-	-

Thursday (17 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	50%	20%	10%	20%	30%	30%	40%	60%	50%	50%	60%	70%	80%	70%	70%	70%	70%	60%	30%	20%	20%	10%	10%	20%
Temperature (°C)	14°	13°	13°	12°	12°	11°	11°	11°	11°	12°	13°	13°	14°	14°	15°	15°	15°	14°	14°	14°	13°	12°	12°	12°
Feels like temperature (°C)	11°	11°	10°	10°	9°	9°	8°	8°	8°	9°	10°	11°	11°	11°	11°	11°	11°	11°	11°	11°	11°	10°	9°	9°
Wind direction and speed (mph)	SW 14	W 14	W 13	WSW 13	WSW 13	WSW 14	SW 14	SW 14	SW 14	SW 14	WSW 15	WSW 15	WSW 16	W 17	W 17	W 17	W 17	W 17	W 15	W 14	W 13	WSW 13	WSW 14	WSW 13
Wind gust (mph)	25	23	21	21	21	23	23	25	27	29	31	33	34	34	34	34	34	32	30	26	24	22	22	21
Visibility (description)	M	G	VG	VG	VG	G	G	G	G	G	G	G	VG	G	G	G	G	G	G	G	VG	VG	VG	VG
Humidity	92%	87%	84%	84%	84%	85%	85%	86%	86%	85%	82%	77%	72%	68%	68%	65%	65%	66%	66%	68%	71%	75%	75%	77%
UV	-	-	-	-	-	-	-	1	1	1	2	3	3	3	3	2	2	1	1	1	-	-	-	-

Friday (18 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	20%	40%	40%	30%	30%	20%	20%	10%	20%	40%	60%	70%	70%	80%	70%	70%	60%	60%	50%	50%	40%	40%	30%	20%
Temperature (°C)	12°	12°	12°	12°	12°	12°	12°	11°	11°	12°	13°	13°	14°	14°	14°	15°	15°	16°	16°	15°	15°	15°	14°	14°
Feels like temperature (°C)	10°	9°	10°	10°	10°	10°	9°	9°	9°	10°	10°	10°	11°	11°	12°	12°	13°	14°	14°	13°	13°	12°	12°	12°
Wind direction and speed (mph)	WSW 13	WSW 13	WSW 13	WSW 13	WSW 13	SW 13	SW 11	SW 11	SW 13	SSW 13	SSW 14	SSW 14	SSW 14	SSW 14	SSW 15	SSW 15	SW 15	SW 15	SW 14	SW 14	WSW 14	WSW 13	WSW 13	SW 11
Wind gust (mph)	21	22	22	22	21	21	21	20	21	23	25	26	29	30	30	30	29	29	27	25	24	22	22	21
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	M	M	G	G	G	G	M	M	G
Humidity	79%	83%	85%	86%	86%	86%	86%	86%	86%	85%	85%	85%	87%	90%	91%	91%	91%	88%	89%	88%	89%	88%	87%	88%
UV	-	-	-	-	-	-	-	1	1	1	1	1	2	2	1	1	1	1	1	1	-	-	-	-

Saturday (19 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	10%	10%	10%	10%	20%	20%	20%	20%	30%	40%	40%	40%	40%	40%	30%	30%	30%	30%	40%	40%	40%	30%	30%	30%
Temperature (°C)	14°	14°	13°	13°	13°	13°	13°	13°	13°	14°	15°	15°	16°	16°	17°	17°	17°	16°	16°	15°	14°	14°	14°	14°
Feels like temperature (°C)	12°	11°	11°	11°	11°	11°	11°	11°	11°	12°	13°	13°	14°	14°	14°	15°	14°	14°	14°	13°	12°	12°	12°	12°
Wind direction and speed (mph)	SW 13	SW 13	SW 13	SW 13	SW 13	SW 13	SW 13	SW 13	SW 13	SW 13	SW 13	SW 14	WSW 14	WSW 15	WSW 14	WSW 14	WSW 14	WSW 14	WSW 14	WSW 13	WSW 13	WSW 11	WSW 11	WSW 11
Wind gust (mph)	21	20	20	20	21	22	21	21	22	25	27	28	28	29	30	30	29	27	26	24	23	22	22	21
Visibility (description)	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G	G
Humidity	87%	87%	88%	88%	89%	90%	90%	90%	89%	87%	86%	82%	78%	74%	70%	66%	68%	67%	69%	69%	74%	78%	80%	80%
UV	-	-	-	-	-	-	-	1	1	1	1	2	2	2	3	2	1	1	1	1	-	-	-	-

Sunday (20 September 2026)

Time	00:00	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	20%	20%	20%	20%	20%	20%	30%	30%	30%
Temperature (°C)	14°	14°	14°	15°	15°	17°	17°	17°	15°
Feels like temperature (°C)	12°	12°	12°	13°	13°	15°	15°	16°	14°
Wind direction and speed (mph)	WSW 11	WSW 11	WSW 11	WSW 9	WSW 11	WSW 11	WSW 10	SW 8	SSW 8
Wind gust (mph)	22	20	19	19	24	22	20	18	19
Visibility (description)	G	G	G	G	G	G	G	G	G
Humidity	83%	84%	86%	87%	81%	70%	71%	80%	86%
UV	-	-	-	1	2	3	1	1	-

Monday (21 September 2026)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	30%	20%	20%	10%	10%	20%	20%	30%
Temperature (°C)	15°	15°	16°	17°	18°	19°	18°	17°
Feels like temperature (°C)	14°	14°	14°	15°	17°	17°	17°	16°
Wind direction and speed (mph)	SSW 8	SSW 9	SSW 10	SSW 11	SSW 11	SSW 13	SSW 10	SSW 10
Wind gust (mph)	19	20	22	24	25	23	22	22
Visibility (description)	G	G	G	G	G	G	G	G
Humidity	92%	93%	92%	89%	85%	80%	81%	87%
UV	-	-	1	1	3	1	1	-

UK video forecast

Belfast International Airport weather map

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Northern Ireland weather forecast

Headline:

Occasional showers overnight, a brighter day on Wednesday, rain later.

This Evening and Tonight:

Clear spells and scattered showers in the evening, a few of these heavy at first. Clear spells and showers overnight, staying driest in the southeast. Minimum temperature 11 °C.

Wednesday:

Bright spells and a few showers in the morning, these mainly over Antrim. Cloud spilling east in the afternoon before occasionally heavy rain pushes east in the evening. Maximum temperature 17 °C.

Outlook for Thursday to Saturday:

Bright spells and scattered blustery showers on Thursday. Showers easing early Friday, becoming dry and bright before rain spreads east later. Bright spells and scattered showers on Saturday.

Updated: 16:00 (UTC+1) on Tue 15 Sep 2026

UK long range weather forecast

The first part of this period will likely see a build of pressure across much of the UK, with Atlantic weather fronts becoming more confined to northern and northwestern areas. As such, plenty of dry and increasingly warm and perhaps rather humid weather will develop, whilst the bulk of the rain and possible strong winds are more likely to affect the northwest of the UK. Many areas may remain mostly settled towards the end of September, but there is the possibility of areas of low pressure moving in from the Atlantic bringing more widely unsettled conditions.

Updated: 13:00 (UTC+1) on Tue 15 Sep 2026

More changeable weather may become established more widely as we move into October, though parts of the west and northwest are perhaps most likely to see wet and windy conditions at times. As is not untypical as we move towards mid October, deep low pressure systems could bring occasional periods of very strong winds. Temperatures are likely to remain above normal overall, though brief cooler interludes are also possible.

Updated: 14:00 (UTC+1) on Tue 15 Sep 2026

Belfast International Airport (County Antrim) weather

Find a forecast

Forecast days

Tue 15 Sep

Tue 15 Sep

Wed 16 Sep

Wed 16 Sep

Thu 17 Sep

Thu 17 Sep

Fri 18 Sep

Fri 18 Sep

Sat 19 Sep

Sat 19 Sep

Sun 20 Sep

Sun 20 Sep

Mon 21 Sep

Mon 21 Sep

7 day forecast for Belfast International Airport

Tooltip header

UK video forecast

Northern Ireland weather forecast

Headline:

This Evening and Tonight:

Wednesday:

Outlook for Thursday to Saturday:

UK long range weather forecast

Nearest forecasts

Belfast International Airport (County Antrim) weather

Find a forecast

Forecast days

Tue 15 Sep

Tue 15 Sep

Wed 16 Sep

Wed 16 Sep

Thu 17 Sep

Thu 17 Sep

Fri 18 Sep

Fri 18 Sep

Sat 19 Sep

Sat 19 Sep

Sun 20 Sep

Sun 20 Sep

Mon 21 Sep

Mon 21 Sep

7 day forecast for Belfast International Airport

UK video forecast

Northern Ireland weather forecast

Tuesday 15 Sep - Saturday 19 Sep

Headline:

This Evening and Tonight:

Wednesday:

Outlook for Thursday to Saturday:

UK long range weather forecast

Sunday 20 Sep - Tuesday 29 Sep

Wednesday 30 Sep - Wednesday 14 Oct

Nearest forecasts